The population mean and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual.

For a sample of n =75, find the probability of a sample mean being greater than 220 if

=219 and 219 and equals =3.8

.

For a sample of nequals 75, the probability of a sample mean being greater than

220 if u equals 219 =219 and sigmaequals =3.8

.

(Round to four decimal places asneeded.)